CN100528395C - Workpiece bending angle detecting device and workpiece bending machine - Google Patents

Abstract

A work bending angle detecting device (102) used on a bending machine (101) for bending a work by the cooperation between a die (P) and a lower die (D), comprising a detector body (103) provided with a casing and capable of detecting the bending angle of a work with this casing kept in contact with and fixed to the portion to be contacted of the lower die, a first moving means (111) for moving the detector body between the position of the detector body when the casing of the detector body is in contact with and fixed to the portion to be contacted of the lower die and a position where the detector body is farthest from the die, and a second moving means (113) able to move the detector body in the bending direction of the work when the detector body is moved away from the die by the first moving means.

Description

The angle of bend checkout gear of workpiece and the bending machine of workpiece

Technical field

The present invention relates to the angle of bend checkout gear of workpiece etc., relate in particular to the angle of bend checkout gear, the bending machine of workpiece of workpiece that the angle of bend of workpiece is measured in the side of using mould.

Background technology

All the time, the bender of the workpiece of the known angle of bend that following mensuration workpiece arranged, when it utilizes the co-operating of drift and punch die to carry out the angle of bend of workpiece of bending machining in mensuration, by cylinder portion is moved upward from the detector body of the width both sides that are separately positioned on punch die, and make the straight line portion of assigned position contact workpiece, simultaneously, in the reinforcing upward of above-mentioned cylinder portion, make the straight line portion of the contact head contact workpiece that can be provided with up or down, utilize length meter to measure the height and position of the contact head of this moment, determine the workpiece angle of bend from the difference in height and the horizontal range of distance afore mentioned rules part and the contact point of contact head.In addition, as prior art related to the present invention, there are Japan's patent gazette, spy to open (patent documentation 1) 2001-121215 number.

Yet, in the bender of above-mentioned existing workpiece, the width both sides of the punch die on the punch die holding member that is used for punch die is installed in the lower table upper end (punch die frame), length direction at punch die is respectively equipped with guide rail, be provided with length direction at punch die along above-mentioned each guide rail and move freely slide block, simultaneously on these slide blocks, be respectively equipped with detector body, so straight line deterioration in accuracy of above-mentioned guide rail in a single day for example, then above-mentioned detector body rises and falls and (for example moves, it is mobile to be with the axle that extends along the moving direction of above-mentioned detector body that the center rises and falls a little rotationally), can not measure the problem of the angle of bend of workpiece when having accurately.

Summary of the invention

The problem that the present invention exists in view of above-mentioned prior art and proposing, the purpose of this invention is to provide in a kind of angle of bend checkout gear of workpiece of the bending machine in the bending machining of carrying out workpiece by the co-operating of upper die and lower die, can measure the angle of bend checkout gear of workpiece of the angle of bend of workpiece accurately.Other purpose is, a kind of angle of bend detection system of workpiece of the angle of bend checkout gear that has used above-mentioned workpiece, the bending machine of workpiece are provided.

In order to realize above-mentioned first purpose, the angle of bend checkout gear of the workpiece of first scheme of the present invention is used for being undertaken by the co-operating of upper die and lower die the bending machine of the bending machining of workpiece, it is characterized in that, comprises with the lower part: framework; And detector body, it is in the contact of above-mentioned framework and be fixed under the state in the portion of being touched of above-mentioned patrix or above-mentioned counterdie, can detect the angle of bend of above-mentioned workpiece.

Be subordinated to the alternative plan of the present invention of above-mentioned first scheme, in the angle of bend checkout gear of above-mentioned workpiece, also comprise with the lower part: first travel mechanism, it can and be fixed on the position of above-mentioned above-mentioned detector body when being touched in the portion and above-mentioned detector body moves above-mentioned detector body between the position of the above-mentioned detector body of above-mentioned mould farthest the time in the contact of the framework of above-mentioned detector body; And, second travel mechanism, its above-mentioned detector body by above-mentioned first travel mechanism when above-mentioned mould leaves, can move above-mentioned detector body to the sweep direction of above-mentioned workpiece.

Be subordinated to third party's case of the present invention of above-mentioned first scheme or alternative plan, in the angle of bend checkout gear of above-mentioned workpiece, the above-mentioned portion of being touched is formed at the side of above-mentioned counterdie; And, above-mentioned first travel mechanism is from the deviation location of above-mentioned detector body from above-mentioned counterdie below farthest, framework to above-mentioned detector body contacts and is fixed on the mechanism that the above-mentioned contact position that is touched the top in the portion tilts to move above-mentioned detector body, and, deviation location one side below above-mentioned, move above-mentioned detector body point-blank, contact position one side above above-mentioned moves above-mentioned detector body near the bigger mode of ratio that the above-mentioned above-mentioned detector body of ratio that is touched portion rises in the horizontal direction with above-mentioned detector body.

Cubic case of the present invention is a kind of bending machine of workpiece, comprises with the lower part: the bending sequence determination means that determines the bending sequence of workpiece based on product information; Determine the mould determination means of the crooked employed mould of above-mentioned workpiece based on the said goods information; Determine the mold layout determination means of the crooked employed mold layout of above-mentioned workpiece based on the said goods information; Calculate the position of above-mentioned workpiece of each bending sequence of the above-mentioned workpiece that is determined by above-mentioned bending sequence determination means as Work position information and calculate mechanism with respect to the location of workpiece that the position is set of the mould that is determined by above-mentioned mold layout determination means; And, each bending sequence of the above-mentioned workpiece that determined by above-mentioned bending sequence determination means is determined the angle detection position determination means that locates of the angle of bend of above-mentioned workpiece.

Be subordinated to the 5th scheme of the present invention of above-mentioned cubic case, in the bending machine of above-mentioned workpiece, have when carrying out the bending machining of above-mentioned workpiece, the prompting mechanism that the position of the above-mentioned workpiece of the sweep bearing of trend of above-mentioned workpiece is pointed out.

Be subordinated to the 6th scheme of the present invention of above-mentioned cubic case or the 5th scheme, in the bending machine of above-mentioned workpiece, be provided with the angle of bend checkout gear of the workpiece that a plurality of angle of bend that carry out above-mentioned workpiece detect, above-mentioned each workpiece angle of bend checkout gear constitutes can distinguish running fix independently; And above-mentioned angle detection position determination means determines the quantity and the position of employed above-mentioned workpiece angle of bend checkout gear based on the said goods information.

Be subordinated to each the 7th scheme of the present invention in above-mentioned cubic case to the six schemes, in the bending machine of above-mentioned workpiece, the floor push that possesses the pressure head of the bending machine that is used to start above-mentioned workpiece, this floor push constitute based on the position of being calculated the workpiece that mechanism calculates by the above-mentioned location of workpiece and move it the location.

Be subordinated to each of the present invention the case from all directions in above-mentioned cubic case to the seven schemes, in the bending machine of above-mentioned workpiece, the angle of bend checkout gear that carries out the workpiece that the angle of bend of above-mentioned workpiece detects is the angle of bend checkout gear of claim 1 to each described workpiece of claim 3.

Be subordinated to the above-mentioned the cubic case to the 9th scheme of the present invention of each in the case from all directions, in the bending machine of above-mentioned workpiece, at the upper table that is used to be provided with patrix, be used to be provided with any workbench at least of the lower table of counterdie, be provided with a plurality of raised member.

The invention that first scheme according to the present invention is put down in writing to third party's case has the effect that can measure the angle of bend of workpiece accurately.

In addition, the invention that cubic case to the nine schemes according to the present invention are put down in writing has the effect of the bending machine that the workpiece that can obtain product expeditiously can be provided.

Description of drawings

Fig. 1 observes the counterdie of workpiece bending machine and the figure at the position of the angle of bend checkout gear that is provided with workpiece from the length direction of counterdie.

Fig. 2 is the stereogram of schematic configuration of the angle of bend checkout gear of the expression workpiece that is arranged on operator's one side.

Fig. 3 be in the presentation graphs 2 arrow III direction to view.

Fig. 4 is the figure of the schematic configuration of expression detector body, is the figure that observes above-mentioned detector body from X-direction.

Fig. 5 be in the presentation graphs 4 arrow IV direction to view.

Fig. 6 is the flow chart of the action of the above-mentioned bending machine of expression.

Fig. 7 is the flow chart of the action of the above-mentioned bending machine of expression.

Fig. 8 is the calcspar of expression bender with angle detection device.

Fig. 9 is the flow chart of expression bender with the order of angle detecting method.

Figure 10 is the structure of expression sensor head and the side view of action.

Figure 11 A and Figure 11 B are the key diagrams of action of the inspection light of expression sensor head.

Figure 12 is the curve map of the light income of expression light-receiving device with the variation of the anglec of rotation of sensor head.

Figure 13 is the key diagram of action of the sensor head of expression angle detection device.

Figure 14 is the calcspar of expression bender with angle detection device.

Figure 15 is the flow chart of expression bender with the order of angle detecting method.

Figure 16 is the structure of expression sensor head and the side view of action.

Figure 17 is the key diagram of expression bender with the principle of angle detecting method and angle detection device thereof.

Figure 18 is the curve map of expression light income with the variation of the anglec of rotation of sensor head.

Figure 19 is the figure of the case of bending of expression workpiece W.

Figure 20 is the figure of the case of bending of expression workpiece W.

Figure 21 be the central shaft of expression punch die and drift with respect to the axle offset of vertical direction the figure of state of very small angles.

Figure 22 is the front view of schematic configuration of the bending machine of expression workpiece.

Figure 23 is the side view of schematic configuration of the bending machine of expression workpiece.

Figure 24 is the stereogram that the position of the angle of bend checkout gear of expression punch die, workpiece, back gauge, prompting parts, workpiece concerns.

Figure 25 is the stereogram that the position of the angle of bend checkout gear of expression punch die, workpiece, back gauge, prompting parts, workpiece concerns.

Figure 26 is the calcspar of the schematic configuration of expression control device.

Figure 27 is the figure that is illustrated in the shown picture of the indication mechanism of control device.

Figure 28 is the stereogram of position relation of angle of bend checkout gear of position, prompting position component, the workpiece of each mould of expression mold layout, is the figure from observing with the same direction of Figure 22.

Figure 29 is the flow chart of action of the bending machine of expression workpiece.

Figure 30 is the flow chart of action of the bending machine of expression workpiece.

Figure 31 A and Figure 31 B are the figure of expression raised member.

The specific embodiment

Below, with reference to description of drawings preferred forms of the present invention.

First embodiment

At first, in order to should be readily appreciated that the overall structure of the bending machine of diagrammatic illustration workpiece (squeezer) 101.

Fig. 1 is the figure at position that observes the angle of bend checkout gear that is provided with counterdie D and workpiece (below, abbreviate " angle of bend checkout gear " sometimes as) 2 of workpiece bending machine 101 from the length direction of counterdie D.

The bending machine of workpiece (below, abbreviate " bending machine " sometimes as) 101 as shown in figure 22, one side possesses upper table (pressure head) 110 on the top of body side frame, one side possesses lower table 105 in the bottom.At the downside of upper table 110, by punch carrier 106 patrix (drift) P is housed, at the upside of lower table 105, be equipped with counterdie (punch die) D by punch die frame 107.

And, carry out the bending machining of laminal workpiece W by the co-operating of patrix P and counterdie D.Promptly, for example use drivers such as hydraulic cylinder or servo motor 202 that the upper and lower workbench 110 of control device shown in Figure 26 (control device of control workpiece bending machine 101 integral body) 201 controls is moved with respect to body side frame 108, make patrix P and counterdie D approaching mutually by above-mentioned patrix P is moved with respect to above-mentioned counterdie D, thereby laminal workpiece W is carried out bending machining.

In above-mentioned bending machine 101, patrix P is positioned at the top, and counterdie D is positioned at the below, and the sweep of workpiece W extends in the horizontal direction.

In addition, in above-mentioned bending machine 101, though be to make fixedly that the only mobile patrix P of counterdie D comes workpiece W is carried out Bending Processing, but, can make also fixedly that the only mobile counterdie D of patrix P comes workpiece W is carried out Bending Processing, also can mobile patrix P counterdie D both sides carry out Bending Processing workpiece W.That is, so long as make the patrix P that leaves mutually and counterdie D got final product near coming that workpiece W is implemented Bending Processing mutually.

Have again, also can be configured to make the sweep of workpiece W to carry out Bending Processing above-mentioned patrix P and counterdie D along vertical direction or other directions (for example tilted direction) extension.

In addition, bending machine 101 also can be made, and the operator controls workpiece W and carries out bending machining to workpiece W.

Here, for convenience of explanation, when sometimes a direction in the horizontal direction promptly being used bending machine 101 bending workpieces W, the direction that the bending line of workpiece W extends is called X-direction.This X-direction also can be described as the direction identical with the length direction of mould P, D, is the left and right directions of bending machine 101.

In addition, sometimes the other direction of horizontal direction promptly is called Y direction with the direction of above-mentioned X-direction quadrature.This Y direction also can be described as the direction identical with the width of mould P, D, is the fore-and-aft direction of bending machine 101.

Sometimes also above-below direction is called Z-direction.

On above-mentioned bending machine 101 employed angle of bend checkout gears 102, be provided with detector body 103.

Above-mentioned detector body 103 possesses framework 109.And, this framework 109 is in contact and be fixed under the state of the portion that is touched (being formed at the portion that is touched at regulation position) of the above-mentioned counterdie D the position that is positioned at above-mentioned each mould P, the D that carry out above-mentioned bending machining near, and above-mentioned detector body 103 detects the angle of bend of above-mentioned workpiece W.

At least 2 portion's of being touched contacts that the sweep direction of the above-mentioned workpiece W of above-mentioned detector body 103 usefulness is left also are fixed on the above-mentioned counterdie D, perhaps contact is fixed on sweep direction with above-mentioned workpiece W and is arranged side by side being touched in the portion of each counterdie (constituting each counterdie of mold layout) on above-mentioned bending machine 101, can detect the angle of bend of above-mentioned workpiece W.

Above-mentioned angle of bend checkout gear 102 is illustrated in greater detail.

Above-mentioned angle of bend checkout gear 102 is arranged on the width both sides of above-mentioned each mould P, D, constitutes the curved detection system 104 of workpiece.Here, be that the angle of bend checkout gear 102 of the workpiece of operator's one side describes to width one side that is arranged on above-mentioned counterdie D.

On the angle of bend checkout gear 102 of above-mentioned workpiece, be provided with first travel mechanism 111.By this first travel mechanism 111 said determination main body 103 is moved between the position PS3 of the above-mentioned detector body 103 of above-mentioned counterdie D farthest the time by the position PS1 of detector main body 103 and above-mentioned detector body 103 in framework 109 contact of above-mentioned detector body 103 and above-mentioned above-mentioned when being touched portion that be fixed on above-mentioned counterdie D.

Also have, contacted under the above-mentioned state that is touched portion in the framework 109 of above-mentioned detector body 103, the framework 109 of above-mentioned detector body 103 is pushed to the above-mentioned portion that is touched by above-mentioned first travel mechanism 111, makes the framework 109 of above-mentioned detector body 103 can not move with respect to the above-mentioned portion that is touched.

In addition, on the angle of bend checkout gear 102 of above-mentioned workpiece, be provided with second travel mechanism 113, this second travel mechanism 113 makes above-mentioned detector body 103 from above-mentioned counterdie D farthest the time (when being positioned at PS3 place, position) by above-mentioned first travel mechanism 111, for framework 109 contact that makes above-mentioned detector body 103 and be fixed on above-mentioned different other of portion that are touched and be touched in the portion, above-mentioned detector body 103 is moved in the sweep direction of above-mentioned workpiece W (also can be the direction of composition that comprises the length direction of above-mentioned counterdie D).

Angle of bend checkout gear 102 for above-mentioned workpiece, one group of mould is set on bending machine 101, when workpiece W is carried out bending machining, use above-mentioned second travel mechanism 113 that detector body 103 is moved in the sweep direction of above-mentioned workpiece W, make 103 contacts of above-mentioned detector body and be fixed on to be formed on above-mentioned one group of mould and at least 2 of leaving on the sweep direction of above-mentioned workpiece W are touched portion's (being formed at the portion that is touched on the counterdie D), and measure the angle of bend of above-mentioned workpiece W.

Also have, also can make not use one group of mould but dispose many molds (complete counterdie and patrix) (being configured to mold) and constitute mold layout in the sweep direction of workpiece W, use above-mentioned second travel mechanism 113 that above-mentioned detector body 103 is moved in the sweep direction of above-mentioned workpiece W, and make above-mentioned detector body 103 contact and be fixed on the portion that is touched of each counterdie that has constituted above-mentioned mold layout, above-mentioned each mould (each die set) is measured the angle of bend of above-mentioned workpiece W.

Implement the occasion of complicated bending machining a workpiece W being implemented a plurality of bending machining etc., use above-mentioned mold layout.

Above-mentioned angle of bend checkout gear 102 is described in detail.

Fig. 2 is the stereogram of schematic configuration of the angle of bend checkout gear 102 of the expression workpiece that is arranged on operator's one side, Fig. 3 be in the presentation graphs 2 arrow III direction to view.

Constitute the portion that is touched that the framework 109 of detector body 103 of the angle of bend checkout gear 102 of the workpiece be arranged on operator's one side is contacted, be formed at the top of the side (face that launches at the length direction of vertical direction and above-mentioned counterdie D) of above-mentioned counterdie D.

Above-mentioned first travel mechanism 111 make above-mentioned detector body 103 from above-mentioned detector body 103 from the deviation location PS3 of above-mentioned counterdie D below farthest to framework 109 contacts of above-mentioned detector body 103 and be fixed on the above-mentioned contact position PS1 that is touched the top in the portion and move obliquely.

In addition, deviation location PS3 one side of above-mentioned first travel mechanism 111 below above-mentioned, above-mentioned detector body 103 is moved along straight line obliquely upward towards the direction of the position of above-mentioned top PS1, contact position PS1 one side above above-mentioned, above-mentioned detector body 103 is moved near the bigger mode of ratio that the above-mentioned above-mentioned detector body 103 of ratio that is touched portion rises in the horizontal direction with above-mentioned detector body 103, and near above-mentioned contact position PS1, make above-mentioned detector body 103 roughly move in the horizontal direction (with reference to Fig. 1).

Above-mentioned first travel mechanism 111 is described in detail.

As shown in Figure 2, above-mentioned first travel mechanism 111 possesses relative to moving freely moving-member 115 by above-mentioned second travel mechanism 113 to the bearing of trend (X-direction) of the sweep of above-mentioned workpiece W, and (extending to above-mentioned X-direction) axle CL1 that extends abreast with the sweep with above-mentioned workpiece W is a center rotation base component 117 freely.

In addition, in above-mentioned first travel mechanism 111, be provided with support component 119.

Above-mentioned support component 119 forms long bar-shaped, and the framework 109 of above-mentioned detector body 103 is the end that the length direction that is supported on this support component 119 is freely rotated at the center with (extending to above-mentioned X-direction) axle CL3 that the sweep with respect to above-mentioned workpiece W extends abreast.

Above-mentioned support component 119 leaves near above-mentioned counterdie D or from above-mentioned counterdie D for making above-mentioned detector body 103, and said base parts 117 move freely along the length direction of straight line at above-mentioned support component 119 relatively.In addition, the axle of the length direction of above-mentioned support component 119 is positioned on the vertical plane of the sweep of above-mentioned relatively workpiece W.

Be provided with the roller 121 of cylindrical shape in the other end of the length direction of above-mentioned support component 119.This roller 121 is that freely rotate with respect to above-mentioned support component 119 at the center with (extending in above-mentioned X-direction) axle CL5 that the sweep with respect to above-mentioned workpiece W extends abreast.

On above-mentioned moving-member 115, be provided with roller guiding parts 123 integratedly.This roller guiding parts 123 contacts with the peripheral part of above-mentioned rollers 121 and rolls.And, for above-mentioned detector body 103 is moved point-blank in deviation location PS3 one side below above-mentioned, above-mentioned detector body 103 is moved near the bigger mode of ratio that the above-mentioned above-mentioned detector body 103 of ratio that is touched portion rises with above-mentioned detector body 103 in the horizontal direction in contact position PS1 one side above above-mentioned, and guide above-mentioned support component 119.

In addition, in above-mentioned first travel mechanism 111, be provided with boosting mechanism 125 to above-mentioned support component 119 reinforcings, thus with the location independent of above-mentioned support component 119 above-mentioned rollers 121 and above-mentioned rollers guiding 123 are contacted.This boosting mechanism 125 for example is made of compression helical spring 127, and between above-mentioned moving-member 115 and above-mentioned support component 119 to above-mentioned support component 119 reinforcings.

In more detail, above-mentioned support component 119 is supported on the said base parts 117 by linear bearing (not shown) at the pars intermedia of its length direction with moving freely point-blank.Above-mentioned compression helical spring 127 between the other end of above-mentioned support component 119 (being provided with the end of above-mentioned rollers 121) and the position supported by above-mentioned linear bearing, to above-mentioned support component 119 to a direction reinforcing.Being pivot by this reinforcing with the rotary middle spindle CL1 of above-mentioned base component 117 applies torque (is the moment at center with the axle that extends in X-direction) to above-mentioned support component 119, makes the 123 afterburning and contacts of 121 pairs of above-mentioned rollers guiding parts of above-mentioned rollers.

And, the periphery of the contact above-mentioned rollers 121 of above-mentioned rollers guiding parts 123 also guides the guiding position 129 of above-mentioned rollers 121, making linearity (with reference to the position 129A of Fig. 3) away from place (below one side) with the position of above-mentioned compression helical spring 127 reinforcings, near position (top one side) with above-mentioned helical spring 127 reinforcings, be connected with above-mentioned linearity position and form concavity (with reference to the position 129B of Fig. 3), thus, above-mentioned detector body 103 moves point-blank in above-mentioned deviation location PS3 one side, in above-mentioned contact position PS1 one side, above-mentioned detector body 103 is moved in the horizontal direction near the bigger mode of ratio that the above-mentioned above-mentioned detector body 103 of ratio that is touched the position rises with above-mentioned detector body 103.

In addition, in above-mentioned first travel mechanism 111, be provided with the driver that is used for moving above-mentioned support component 119.

Above-mentioned driver is made of fluid pressure cylinders such as air pressure cylinder 131.By the framework 131A and the said base parts 117 of above-mentioned fluid pressure cylinder 131 are arranged to one, thereby make the length direction of the length direction of this fluid pressure cylinder 131 and above-mentioned support component 119 roughly consistent with each other, then above-mentioned fluid pressure cylinder 131 is that pivot rotates with an axle CL1 identical with said base parts 117 (above-mentioned support component 119).The position of the leading section of the piston rod 131B of above-mentioned fluid pressure cylinder 131 links into an integrated entity at the position and the above-mentioned support component 119 of an end of above-mentioned support component 119.

Also have, above-mentioned rollers guiding parts 123 forms by laminal material being carried out Bending Processing etc., and double as covers the cover of above-mentioned fluid pressure cylinder 131 etc.

Above-mentioned second travel mechanism 113 possesses along X-direction extends the guide rail 133 that also is arranged on integratedly on the above-mentioned punch die frame 107 more longways, with move freely the bearing 135 that cooperates relative to this guide rail 133, on this bearing 135, be provided with above-mentioned moving-member 115 integratedly.

In addition, above-mentioned bearing 135 or above-mentioned moving-member 115 will move freely the location in X-direction by not shown driver (motor or fluid pressure cylinder etc.).

Secondly, describe above-mentioned detector body 103 in detail.

Fig. 4 is the figure of the schematic configuration of expression detector body 103, is the figure that observes above-mentioned detector body 103 from X-direction.

Fig. 5 be in the presentation graphs 4 arrow IV direction to view.

Above-mentioned detector body 103 possesses two contact heads 137,139 that move point-blank relative to above-mentioned framework 109, and constitute these contact heads 137,139 and relatively move and contact above-mentioned workpiece W relative to above-mentioned framework 109, and the displacement between above-mentioned each contact head 137,139 during based on this contact detects the angle of bend of above-mentioned workpiece W.

In more detail, above-mentioned detector body 103 possesses general profile and forms rectangular-shaped framework 109.It is roughly consistent with the length direction of above-mentioned counterdie D that above-mentioned framework 109 is arranged to its width.

Above-mentioned framework 109 is in an end of its thickness direction (when touching counterdie D direction) consistent with the width of above-mentioned punch die, and as above above-mentioned such rotation is supported on the above-mentioned support component 119 freely.In addition, on the face of the other end of the thickness direction of above-mentioned framework 109, be provided with the contact-making surface 141 that contacts with the portion of being touched of above-mentioned counterdie D.This contact-making surface 141 is arranged on the upside and the downside of the length direction (when touching counterdie punch die D direction) consistent with the short transverse of above-mentioned punch die of the above-mentioned framework 109 of contact.In other words, form recess in the middle part of the above-below direction of above-mentioned contact-making surface 141.Therefore, above-mentioned detector body 103 is by the above-mentioned occasion that is touched portion of above-mentioned first travel mechanism 111 contact, and under stable status, the framework 109 of above-mentioned detector body 103 contacts with the above-mentioned portion of being touched.Also have, also separately form above-mentioned contact-making surface 141 at the both ends of the width of above-mentioned framework 109.

In the inside of above-mentioned framework 109, move to the length direction of above-mentioned framework 109 relative to above-mentioned framework 109 and to be provided with first contact head 137 freely.In addition, in the inside of above-mentioned framework 109, similarly move to the length direction of above-mentioned framework 109 with above-mentioned first contact head 137 and to be provided with second contact head 139 freely relative to above-mentioned framework 109.Above-mentioned each contact head 137,139 thickness direction in above-mentioned framework 109 are arranged side by side, above-mentioned first contact head 137 is configured in an end (side that above-mentioned support component 119 cooperates) of the thickness direction of above-mentioned framework 109, and above-mentioned second contact head 139 is configured in the other end (side of contact counterdie D) of the thickness direction of above-mentioned framework 109.

In more detail, above-mentioned first contact head 137 is by moving first guide rail that cooperates freely and constitute with respect to being wholely set first linear bearing on the inwall of above-mentioned framework 109, above-mentioned second contact head 139 is by moving second guide rail that cooperates freely and constitute with respect to being wholely set second linear bearing on above-mentioned first contact head, thus, above-mentioned each contact head 137,139 moves freely with respect to above-mentioned framework 109.

In addition, between above-mentioned framework 109 and above-mentioned first contact head 137, be provided with first compression helical spring 143 as the elastomer example, and to 137 reinforcings of above-mentioned first contact head, so that above-mentioned first contact head 137 is outstanding from the upper portion of above-mentioned framework 109.

Have again, between above-mentioned first contact head 137 and above-mentioned second contact head 139, be provided with second compression helical spring 145 as the elastomer example, and to 139 reinforcings of above-mentioned second contact head, so that above-mentioned second contact head 139 is outstanding from the upper portion of above-mentioned framework 109.In addition, the spring constant of above-mentioned first compression helical spring 143 is bigger than the spring constant of above-mentioned second compression helical spring 145.

In addition, between above-mentioned first contact head 137 and second contact head 139, be provided with the linear movement pick-up 147 as the example of measuring mechanism, this linear movement pick-up 147 can be measured the relative position relation between above-mentioned first contact head 137 and second contact head 139.

And, shown in 4 figure, when the framework 109 of detector body 103 touches above-mentioned counterdie D, the length direction of above-mentioned framework 109 becomes above-below direction, the thickness direction of above-mentioned framework 109 becomes the width of above-mentioned counterdie D, the width of above-mentioned framework 109 becomes the length direction of above-mentioned counterdie D, and the leading section contact workpiece W of above-mentioned each contact head 137,139 is also pushed by workpiece W and direction (following direction) in above-mentioned framework 109 moves.

And, as among Fig. 4 with shown in the double dot dash line like that, if above-mentioned workpiece W is by bending, the shoulder of the shoulder of the upper end of then above-mentioned first contact head 137 and the upper end of above-mentioned second contact head 139 contacts above-mentioned workpiece W, and measures the amount of movement L1 of above-mentioned relatively first contact head 137 of above-mentioned second contact head 139 by linear movement pick-up 147.

Above-mentioned amount of movement L1 for example, shoulder in the upper end of the shoulder of the upper end of above-mentioned first contact head 137 and above-mentioned second contact head 139 is made as " 0 " when being positioned at sustained height, by from the height of the shoulder of the upper end of above-mentioned first contact head 137 (height) L3, deduct to be positioned at and more obtain by the height of the shoulder of above-mentioned second contact head 139 of below (height) L5 from the upper end of framework 109 than the shoulder of the upper end of above-mentioned first contact head 137 from the upper end of framework 109.

Also have, for example, both can be by between first guide rail that constitutes above-mentioned first contact head 137 and above-mentioned second bearing, having sandwiched insulator (not shown), thus not under the state of contact workpiece W, make electrically insulated from one another between above-mentioned each contact head 137,139 at above-mentioned each contact head 137,139; Above-mentioned each contact head 137,139 is contacted with the workpiece W that constitutes with metal materials such as steel, when being conducted mutually, above-mentioned each contact head 137,139, measures the amount of movement (difference in height) of 139 pairs of above-mentioned first contact heads 137 of above-mentioned second contact head as triggering.

Here, because distance (distance of the thickness direction of the above-mentioned framework 109) L7 between above-mentioned each contact head 137,139 is known, so, obtain angle of bend θ 11 (the formula f1: θ 11=arctan (L1/L7)) of workpiece W by following formula f1 by the amount of movement L1 of the distance between above-mentioned each contact head 137,139 and 139 pairs of above-mentioned first contact heads 137 of above-mentioned second contact head.

Yet,, also can possess the contact head more than three though above-mentioned detector body 103 possesses two contact heads.In other words, possessing two contact heads at least gets final product.And, can constitute, detect the angle of bend of above-mentioned workpiece W at least based on the displacement between two contact heads in each contact head.

In addition, also can remove the compression helical spring 145 that is located between above-mentioned first contact head 137 and second contact head 139, compression helical spring is set between above-mentioned framework 109 and above-mentioned second contact head 139 comes 139 reinforcings of above-mentioned second contact head and replace; In addition, also can measure the position of above-mentioned first contact head 137 with first linear movement pick-up with respect to above-mentioned framework 109, measure the position of 139 pairs of above-mentioned frameworks 109 of above-mentioned second contact head with second linear movement pick-up, use measured value poor of the measured value of above-mentioned first linear movement pick-up and above-mentioned second linear movement pick-up, obtain the amount of movement of above-mentioned relatively first contact head 137 of above-mentioned second contact head 139.

So far, though the angle of bend checkout gear 102 to the workpiece that is arranged on operator's one side is illustrated, but, as above above-mentioned, be provided with and the angle of bend checkout gear 102 of the set above-mentioned workpiece of operator's one side angle of bend checkout gear 102 (with reference to Fig. 2) in back gauge one side (operator's opposition side) of above-mentioned angle of bend processing machine 101 with the workpiece of spline structure.

But, a side that makes the width that is arranged on above-mentioned counterdie D is constituting of above-mentioned first travel mechanism 111 that moves of the detector body 103 of operator's one side of angle of bend checkout gear 102 of the workpiece of operator's one side, being that the above-mentioned first travel mechanism 111 steeper gradients that the detector body 103 of back gauge one side of angle of bend checkout gear 102 of the workpiece of back gauge one side moves move above-mentioned detector body 103 than the opposite side that makes the width that is arranged on above-mentioned counterdie D.

In other words, as shown in Figure 2, it constitutes, a side that is arranged on the width of above-mentioned counterdie D is the position of the back gauge one side detector body 103 of back gauge one side from the framework 109 of the above-mentioned detector body 103 of above-mentioned counterdie D farthest the time, the opposite side of comparing the width that is arranged on above-mentioned counterdie D be operator's one side detector body 103 of operator's one side from the position of the framework 109 of the detector body 103 of above-mentioned counterdie D farthest the time, on the width of above-mentioned counterdie D, be positioned at position away from above-mentioned counterdie D.

It constitutes, above-mentioned back gauge one side detector body 103 touch above-mentioned counterdie D be touched the position time the position of framework 109 of above-mentioned detector body 103 and aforesaid operations person's one side detector body 103 touch above-mentioned counterdie D be touched the position time the position of framework 109 of above-mentioned detector body 103 on short transverse, be in roughly the same position.

In addition, as above above-mentioned, the angle of bend θ 13 of angle of bend θ 11 by the workpiece W that obtains with operator's one side detector body 103 and the workpiece W that obtains with back gauge one side detector body 103 can obtain the angle of bend θ 15 (with reference to Fig. 4) of workpiece reality.Above-mentioned angle of bend θ 15 can obtain (formula f3: θ 15=180 °-θ 11-θ 13) by the formula f3 shown in following.

Secondly, the action to above-mentioned processing bending machine 101 describes.

Above-mentioned bending machine 101 and angle of bend checkout gear 102 move under the control of above-mentioned control device.

Fig. 6, Fig. 7 are the flow charts of the action of expression bending machine 101.

Here, use mold layout illustrate curved workpieces W the time action.

At first, in step S101, use CAD information with the bending sequence, mould, the mold layout that manually or automatically decide workpiece W, with manually or automatically each operation being calculated DV value (the punch die D during bending machining and the distance between the drift P) and L value (propping up the position of the back gauge of workpiece W).

In step S103, to the position of each bending operation decision angle of bend checking device 102 pairs of regulations Working position (position of the workpiece W of mould table).That is, decision is positioned at the above-mentioned position that is touched portion of the sweep direction of workpiece W.

In step S105, after finishing, preparation begins processing, in step S107, detector body 103 is moved to the position that is determined by step S103 by above-mentioned second travel mechanism 113.

In step S109, pressure head (upper table) begins to descend, in step S111, but detect and judge whether the upper surface of drift P and workpiece W is in contact with one another (whether drift P drops to clamping point) by the linear movement pick-up (not shown) of the position of test example such as above-mentioned pressure head.

In step S111, dropped to the occasion of clamping point being judged as drift P, in step S113, temporarily stop the decline of pressure head.

In step S115, connect the fluid pressure cylinder (for example cylinder) 131 of above-mentioned first travel mechanism 111, make piston rod 131B to the elongation of punch die D direction, make the portion of being touched and the fixing above-mentioned framework 109 of the above-mentioned punch die D of framework 109 contacts of above-mentioned detector body 103.

Also have, if piston rod 131B is extended to punch die D direction, during deviation location PS3 one side of then above-mentioned support component 119 below above-mentioned detector body 103 is positioned at, move obliquely upward along straight line relative to above-mentioned moving-member 115, during contact position PS1 one side above above-mentioned detector body 103 is positioned at, when moving obliquely upward along straight line with respect to above-mentioned moving-member 115, with above-mentioned central shaft CL1 is that pivot rotates, and moves so that support the side direction below of above-mentioned detector body 103.

In addition, above-mentioned detector body 103, when its framework 109 touched the side of above-mentioned counterdie D, being pivot with above-mentioned central shaft CL3 rotated and to the side profiling of above-mentioned counterdie D relative to above-mentioned support component 119.

In step S117, the beginning once more of pressure head descends, and the bending of beginning workpiece W descends.The bending that above-mentioned each contact head 137,139 is followed above-mentioned workpiece W.

In step S119, whether the position of detecting pressure head has reached the DV value of regulation, when reaching the DV value of regulation in the position of pressure head, uses above-mentioned detector body 103 to detect the angle of bend of above-mentioned workpiece W in step S121.

In step S123, whether the angle of bend that detects workpiece W has reached the value of regulation, in the occasion of the angle of bend that does not reach regulation, in step S125, revise the DV value, and return step S117, the occasion at the angle of bend that has reached regulation enters step S127.

In step S127, stop the decline of pressure head and pressure head is risen.And, carry out the occasion of the bending machining of above-mentioned workpiece W at the mould that utilizes other, return step S103, carry out the occasion of the bending machining of above-mentioned workpiece W at the mould that does not utilize other, finish bending machining to above-mentioned workpiece W.

In addition, in above-mentioned action, use each angle of bend checkout gears 102 of the width both sides be arranged on punch die D to detect the angle of bend of workpiece W.

Promptly, in the action shown in above-mentioned steps S115～S125, make framework 109 contact of first detector body (detector body 103 of the angle of bend checkout gear 102 of operator's one side) and be fixed on the side of the above-mentioned counterdie D the position that is positioned at above-mentioned each mould that carries out above-mentioned bending machining near, detect the angle of bend of the side of above-mentioned workpiece W; Simultaneously, make framework 109 contact of second detector body (detector body 103 of the angle of bend checkout gear 102 of back gauge one side) and be fixed on another side of the above-mentioned counterdie D the position that is positioned at above-mentioned each mould that carries out above-mentioned bending machining near, detect the angle of bend of the opposite side of above-mentioned workpiece W.

Then, utilize the testing result of above-mentioned angle of bend to measure the angle of bend of above-mentioned workpiece W,, revise the distance (DV value) between above-mentioned counterdie D and the above-mentioned patrix P according to the angle of bend of the above-mentioned above-mentioned workpiece W that measures.

Yet, though in above-mentioned action, the situation of using the mold layout curved workpieces is illustrated,, also can use one group of mould curved workpieces W and detect the angle of bend of workpiece W in the sweep direction of workpiece W.

This occasion is in above-mentioned steps S119, as long as a plurality of angle of bend that are touched portion's (being formed at the portion that is touched on the counterdie) and detect workpiece W that framework 109 contacts of detector body 103 are separated in the sweep direction of workpiece.

If adopt bending machine 101, because the framework 109 of detector body 103 is in contact and be fixed under the state of the portion that is touched of the above-mentioned counterdie D the position that is positioned at above-mentioned each mould that carries out above-mentioned bending machining near, detect the angle of bend of above-mentioned workpiece W, so can measure the angle of bend of workpiece W accurately.

In more detail, the above-mentioned side that is touched the above-mentioned counterdie D at portion place, because the machining benchmark when becoming " V " word shape position of counterdie that forms the above-mentioned workpiece W of contact and carry out bending by attrition process for example, so the positional precision to the position of above-mentioned " V " word shape becomes good, the angle of bend of workpiece W is also measured in the side of the above-mentioned counterdie D that these precision of framework 1 09 contact of detector body 103 become good, so can measure the angle of bend of workpiece W accurately.

In addition, if adopt bending machine 101, because at least 2 portions of being touched that above-mentioned detector body 103 is left in the sweep direction of above-mentioned workpiece W contact and are fixed on the angle of bend of measuring workpiece W on the counterdie D, perhaps, 103 contacts of above-mentioned detector body also are fixed on the angle of bend that the face that is touched that is arranged side by side each the counterdie D on above-mentioned bending machine 101 on the sweep direction of above-mentioned workpiece W is measured workpiece W, it is the angle of bend of framework 109 mensuration workpiece W under the state on the side of the counterdie D that contacts and be fixed on high accuracy processing of detector body 103, so, even as original like that because of the reasons such as low precision of guide rail cause above-mentioned detector body 103 can not be in the mobile accurately occasion of the sweep direction of workpiece W, also can not make the formation complexity of angle of bend checkout gear 102, and can measure the angle of bend of workpiece W accurately.

In addition, if adopt bending machine 101, because above-mentioned first travel mechanism 111 moves above-mentioned detector body 103 in deviation location PS3 one side below above-mentioned point-blank, contact position PS1 one side above above-mentioned, near the bigger mode of ratio that the above-mentioned detector body 103 of the above-mentioned ratio that is touched portion rises above-mentioned detector body 103 is moved in the horizontal direction with above-mentioned detector body 103, so detector body 103 is moved when can avoid interference with counterdie D or punch die frame 107.In addition, if the words that above-mentioned detector body 103 is moved along approximate horizontal, the framework 109 that also can make detector body 103 contacts roughly that sustained height position (sideway stance of counterdie D) detects the angle of bend of workpiece W even the width of counterdie D changes, so can irrespectively correctly measure the angle of bend of workpiece W with the width of counterdie D.

Have again, if adopt bending machine 101, owing to possess the angle of bend checkout gear of workpiece W in the width both sides of above-mentioned mould P, D, thus as above above-mentioned, can obtain the actual flexion angle θ 15 of workpiece W.

In addition, if adopt bending machine 101, because it constitutes, operator's one side detector body 103 moves with the ratio inverse range limiter one side detector body 103 steeper gradients, so except that the convenience of the form of bending machine and use, the moving detector main body 103 reliably.

That is, in operator's one side, owing to come moving detector main body 103 with steep gradient, so, can reduce the overhang of the angle of bend checkout gear 102 of operator's one side to operator's one side, improve the convenience that uses.

On the other hand,, be used to keep the maintaining body 149 of counterdie D to be arranged on the sidepiece (with reference to Fig. 2) of punch die frame 107 in back gauge one side, thereby, when can avoid the interference with above-mentioned maintaining body 149 detector body 103 is moved.

Second embodiment

The bending machine of relevant second embodiment, constituting of detector body, make use up and with above-mentioned workpiece W state of contact under detect the angle of bend this point of above-mentioned workpiece, different with the bending machine 101 of above-mentioned first embodiment, other aspects have the structure roughly same with the bending machine 101 of above-mentioned first embodiment, bring into play roughly same effect.

Here, the detector body 4 to second embodiment describes.

In Figure 10,, show the sensor head 3 and the framework 2 that constitute detector body 4 for angle of bend checkout gear 102.Above-mentioned framework 2 roughly similarly constitutes with the framework 109 of the detector body 103 of the bending machine 101 of above-mentioned first embodiment, and rotation is supported on the support component 19 freely.

With reference to Figure 11 (A), Figure 11 (B), the middle position in the front 7 of the sensor head 3 is provided with light projector 9, and this light projector 9 is as light source, to sending as the laser BM that detects light with the direction (vertical direction) of these front 7 quadratures.In addition, in the front 7 of the sensor head 3,, be provided with first light-receiving device 11 and second light-receiving device 13 as optical pickocff on the equidistant position of above-mentioned light projector 9.Promptly, above-mentioned light source 9 and a plurality of optical pickocff 11,13 are configured in and comprise in the same plane of the optical axis of the laser BM of light source 9 irradiation, and sensor head 3 (is pivot with the axle RC that extends in X-direction) in above-mentioned plane is arranged on the above-mentioned framework 19 rotationally.

Also have, in this example, though make light source 9 that optical pickocff 11,13 is set on equidistant symmetric position in the centre, but, it must be symmetric position that above-mentioned optics 11,13 is not limited to, as long as make light source 9 be positioned at opposite each other position in the centre, and know distance in advance, just can utilize each optical pickocff 11,13 in the angle of bend of workpiece W detects, to use from light source 9 to each optical pickocff 11,13.

Simultaneously with reference to Figure 13, the light shaft coaxle of above-mentioned turning cylinder RC and the laser BM that sends from light projector 9 and with this laser BM quadrature, and be arranged perpendicular to the plane of the optical axis, light projector 9, above-mentioned first light-receiving device 11 and second light-receiving device 13 that comprise this laser BM.And sensor head 3 utilizes diagram abridged drive unit to rotate around this turning cylinder RC.

Secondly, with reference to Fig. 8 the function formation of bender (bending machine) with the control system of angle detection device 102 described.First light-receiving device 11 and second light-receiving device 13 are connected with light-receiving device change-over switch 19 by each preamplifier 15,17, the optical signal that is subjected to that utilizes this light-receiving device change-over switch 19 to select from first light-receiving device 11 and second light-receiving device 13.

The optical signal that is subjected to of this selection utilizes bandpass filter 21 that the signal of Rack frequency is passed through, and amplifies and enters synchronous reading loop 25 with amplifier 23.

In this synchronous reading loop 25, synchronous by realizing with light projector from the laser BM of light projector 9, be subjected in the optical data storage 29 by optical data storage 27 or second and will be subjected to the light data to be stored in first, peak value test section 31 is subjected to the light Data Detection to be subjected to the peak value of optical signal based on this, anglec of rotation detector 33 is calculated the anglec of rotation of sensor head 3, and angle is calculated the bending angle that portion 35 obtains workpiece W thus.

Promptly, if receive the signal that bending machining finishes the meaning from the control device of Bending Processing machines (bending machine) such as control squeezer, then measuring control part 37 is subjected to light to select signal to sent by light change-over switch 19, and select first light-receiving device 11 or second light-receiving device 13, carrying out single step by the anglec of rotation that makes sensor head 3 only rotate regulation drives, and send single step to synchronous reading loop 25 and drive end signal, realize being subjected to the sampling of light data and sensor head 3 the anglec of rotation synchronously.Modulation signal in the synchronous and modulator 39 of reading loop 25 is synchronous synchronously.

Secondly, with reference to Figure 11 and Figure 12, the principle of angle of bend 2 θ that detect workpiece W is described.

With reference to Figure 11 (A), sensor head 3 is such as shown in the figure, if turn to the position that the anglec of rotation is θ 1, then the laser BM that shines workpiece W surface from light projector 9 is reflected, and the reflection light quantity that is received by first light-receiving device 11 reaches maximum.With reference to Figure 11 (B), similarly, if the anglec of rotation of sensor head 3 turns to the position into θ 2, then the reflection light quantity of the laser BM that is received by second light-receiving device 13 reaches maximum.In addition, in Figure 11 (A), Figure 11 (B), the angle that illustrates as benchmark is the situation of 0 degree (being level).

Figure 12 has represented the variation of the catoptrical light income of this moment to the anglec of rotation of sensor head 3, generally speaking as can be known, the angle of inclination of sensor head 3 with respect to benchmark angle θ (example shown in Figure 11 is the situation of θ=0 degree) when counter clockwise direction is rotated θ 1, light income by first light-receiving device 11 reaches maximum, in addition, the angle of inclination of sensor head 3 when clockwise direction rotates θ 2, reaches maximum by the light income of second light-receiving device 13 with respect to benchmark angle θ.

First light-receiving device 11 and second light-receiving device 13 are as mentioned above, owing to be provided with equidistantly apart from light projector 9, so in Figure 12, the anglec of rotation θ 1 from horizontal level (θ=0) of the sensor head 3 when the light income of first light-receiving device 11 reaches maximum, sensor head 3 when reaching maximum with the light income of second light-receiving device 13 from the centre position of the anglec of rotation θ 2 of horizontal level, laser BM will be to by the workpiece W of Bending Processing projection light vertically.Like this, obtained by θ=(θ 1+ θ 2)/2 by the angle θ of the workpiece W of Bending Processing.Here, for θ 1 and θ 2 for example adopt with clockwise rotate direction for just, to rotate counterclockwise direction for bearing.

Secondly, with Fig. 9 simultaneously with reference to Fig. 8 and Figure 13, the order of method of using above-mentioned angle detection device 102 to obtain the bending angle of workpiece W is described.

At first, if the beginning angle detects action (step SS), then in bending machining, utilize diagram abridged mobile device to make sensor head 3 move (step S1) to the measuring position abreast along sweep.Make sensor head 3 only rotate θ-α (with reference to Figure 13) and carry out the preparation (step S2) that angle detects action in advance with respect to the angle on target 2 θ moving axis RC that rotates.Here, when target setting angle of bend θ, consider in advance that springback capacity is set for workpiece W is entered between θ ± α reliably.

Bending machining finishes back (step S3), measures control part 37 and selects signal to output to light-receiving device change-over switch 19 and select first light-receiving device 11 (step S4) first light-receiving device.Utilizing diagram abridged device of rotation driving to be positioned to measure the beginning angle is that the sensor head 3 of θ-alpha position rotates (step S5) to clockwise direction by each predetermined angular single step.At this moment, send single step to synchronous reading loop 25 and drive end signal, measure the light income of first light-receiving device 11 and store the data to first with the rotational synchronization ground of sensor head 3 and be subjected to (step S6) in the optical data storage 27 from measuring control part 37.

The later operation of repeating step S5 before the anglec of rotation of sensor head 3 reaches θ+α reaches (step S7) behind θ+α, measures control part 37 and selects signal to output to light-receiving device change-over switch 19 and select second light-receiving device 13 (step S8) with second.Here, though the value of α is set at for example about 10 degree according to the settings such as distance of the distance of light projector 9 and first and second light-receiving device 11,13 and sensor head 3 and the workpiece W that measures.

The mensuration of utilizing device of rotation driving to be used in first light-receiving device 11 is rotated the sensor head 3 that has moved to θ+alpha position and is rotated (step S9) to counter clockwise direction by each predetermined angular single step.At this moment, send single step to synchronous reading loop 25 and drive end signal, measure the light income of second light-receiving device 13 and store the data to second with the rotational synchronization ground of sensor head 3 and be subjected to (step S10) in the optical data storage 29 from measuring control part 37.

The later operation of repeating step S9 before the anglec of rotation of sensor head 3 reaches θ-α, reach (step S11) behind θ-α, peak value test section 31 is subjected to data rows retrieval the optical data storage 27 by the peak value (step S12) of the light income of first light-receiving device 11 from being stored in first.Equally, be subjected to data rows retrieval the optical data storage 29 by the peak value (step S13) of the light income of second light-receiving device from being stored in second.

According to the angle θ 1 of the peak value corresponding sensor of first light-receiving device 11 that obtains like this 3 and with the angle θ 2 of the peak value corresponding sensor of second light-receiving device 13 3, angle is calculated the bending angle θ (step S14) that workpiece W calculates in portion 35, and angle at the end detects action (step SE).

In addition, in the above description, the bending angle of workpiece W is detected in the centre position of the turned position of the sensor head 3 the when turned position of the sensor head 3 when calculating the light income peak value display of first light-receiving device 11 and the light income peak value display of second light-receiving device 13, but, also can reach the turned position of the sensor head 3 that equates mutually by the light income that detects first, second light-receiving device 11,13, and detect the bending angle of workpiece W based on this turned position.

Under the above-mentioned situation, utilize first, second light-receiving device 11,13 to detect simultaneously by making from the reverberation of light projector 9 to the laser of workpiece W irradiation, and the comparison mechanism that whether equates of the detected value that first, second light-receiving device 11,13 of comparison is set, so that the comparative result of this comparison mechanism reaches the structure that equal mode makes positive and negative rotation of motor, then can realize at an easy rate.

Figure 14～Figure 18 represents other embodiment.

In Figure 16, on framework 2, rotate the sensor head 53 that is provided with angle detection device 51 freely.

With reference to Figure 14, in the sensor head 53, will become parallel rays by collimater 59 simultaneously, see through 61 pairs of workpiece W irradiating and detecting light of beam splitter as detected material from the laser BM that light source 57 sends.

On the other hand, the reverberation RBM that touches workpiece W and reflect changes direction by beam splitter 61, and then change directions, and utilize as 67 in the wave detector of the such optical pickocff of optical filter 65 and photodiode and select the light in regulation zone and convert the signal of telecommunication to as sent by optical signal with speculum 63.

The optical signal that is subjected to that obtains like this utilizes bandpass filter 69 that the frequency signal of Rack is passed through, utilize amplifier 71 to amplify and be input to synchronous reading loop 73, and utilize the project signal of sending by means of modulator 75 to realize synchronously from the laser BM of light source 57.

Utilize synchronous reading loop 73 and send to comparator 77 with the synchronous optical signal that is subjected to of the irradiation of laser BM, select the maximum optical signal that is subjected to be stored in the maximum memory 59 as maximum light income test section, and sending to be arranged at makes sensor head 53 rotate the anglec of rotation detector 81 of encoder on the servo motor M of usefulness and so on, detect the rotational angle of the sensor head 53 of this moment, and be stored in as maximum light income angle test section and calculate as angle in the angle memory 83 of portion.

Promptly, if drive circuit 85 receives the signal that bending machining finishes the meaning from the control device of control squeezer, then the angle of rotation that only makes sensor head 53 rotate regulation by control motor M carries out the single step driving, simultaneously, send single step to comparator 77 and drive end signal, synchronous with the anglec of rotation of sensor head 53, at that time be subjected to optical signal and the optical signal that is subjected to are before this compared, the optical signal that is subjected to of maximum is stored in the maximum memory 79, and the anglec of rotation of sensor head 53 is stored in the angle memory 83.

Secondly, with reference to Figure 17 the principle of angle of bend 2 θ of detection workpiece W is described.

If finish the laser BM of the workpiece W irradiation of processing as detection light from 53 pairs of sensor heads, then the catoptrical light quantity that is received by sensor head 53 changes according to the incident angle to workpiece W surface.Thus, after the bending machining of workpiece W is finished, make sensor head 53 in ± α (, α for example can adopt about 5～10 degree) scope, rotate irradiating laser BM on one side here on one side with respect to bend angle 2 θ, and obtain the distribution of the light income that sensor head 53 receives.

With reference to Figure 17 as can be known, vertically sending the occasion of laser BM from sensor head 53 to the surface of workpiece W, reverberation RBM is received by sensor head 53 through same paths.

Simultaneously with reference to Figure 18, distribution for the above-mentioned light income of obtaining like that, after workpiece W is vertically obtained peak-peak during irradiating laser BM, obtain the anglec of rotation with maximum peak corresponding sensor 53, and to serve as the basis with this anglec of rotation measure as the angle of bend θ of workpiece W.Here, angle of bend refers to 2 times of θ certainly.

Secondly, based on Figure 15 the order of method of using above-mentioned bender to obtain the angle of bend of workpiece W with angle detection device 51 is described.

Once you begin angle detects action (step SS), then makes sensor head 53 and sweep move to measuring position (step SS1) abreast in the bending machining action.Utilize motor M to make sensor head 53 only rotate moving axis rotation θ-α in order to measuring beginning (step SS2) with respect to bend angle 2 θ.With maximum memory 79 and angle memory 83 zero clearings (step SS3).

Judge whether bending machining finishes (step SS4), then enter into measurement if finish.Reception shines the reverberation RBM of the laser BM on the workpiece W and measures light income (step SS5) from sensor head 53.The light income and the maximum before this that record are compared (step SS6), under the situation bigger than before this maximum, upgrade maximum memory 79 with current detected light income, simultaneously, upgrade angle memory 83 (step SS7) with the anglec of rotation of current sensor head 53.

On the other hand, the light income that records in step SS6 is unlike under the big situation of before this maximum, and after in step SS7, having upgraded maximum, whether the anglec of rotation of judging sensor head 53 is θ+α (step SS8), under little situation, sensor head 53 single steps are rotated return step SS5 and repeat later order (step SS9).

The anglec of rotation at sensor head 53 has reached under the situation of θ+α, and the anglec of rotation from be stored in angle memory 83 is calculated angle of bend 2 θ (step SS10) of workpiece W, and angle at the end detects action (step SE).

In addition, in the above-described embodiment, though sensor head 53 is arranged to and can is moved and turn to the sweep direction on punch die pedestal (punch die frame) 55,, also can move up and down, be installed in movably forward and backward on the lathe bed of squeezer.Like this, can satisfy the angle of bend Testing requirement of wider scope.

In addition, following in addition method: carry out applying mechanically of curve with the whole storages of measured value and in measurement end back according to the difference of the data of storage, calculate the angle that obtains maximum light income from this curve.In the method, can carry out angular surveying with the precision below the measurement anglec of rotation of sensor head 53.In addition, in this explanation, though be measurement under the pressurized state that utilizes drift, punch die, the state when measuring is not limited thereto.

Also have, reflectivity because of the less situation of the surface state of workpiece under, for example just can easily tackle by pasting suitable suitable processing such as the zone of reflections, not implemented by the surface state of workpiece W with influencing.

The present invention is not limited to aforesaid embodiment, also can embodied in other by carrying out suitable change.For example, also can replace light projector and light-receiving device and make and used the structure that sends suitable electromagnetic wave or hyperacoustic transmitter and receiver.

This occasion, in the structure of Fig. 8, Figure 14, with structure modify be and replacement electromagnetic wave or the corresponding structure of ultrasonic wave about optical system, the structure of angle detection device comprises: angular transducer, it makes to the transmission source of determinand transmission detection ripple possesses a plurality of sensors of reception from the back wave of above-mentioned determinand in the centre and in opposite each other position, and freely rotates to both forward and reverse directions in the plane that disposes above-mentioned transmission source and each sensor; Anglec of rotation detector, it detects the anglec of rotation of above-mentioned angular transducer to the reference position of regulation; The peak value test section, it detects the peak value of the above-mentioned back wave that is received by above-mentioned optical pickocff; And angle calculates portion, and it is for corresponding by the detected peak value of this peak value test section, based on the angle of coming the computing determinand by the anglec of rotation of the detected angular transducer of above-mentioned anglec of rotation detector.

In addition, make following structure, possess: angular transducer, it is being the symmetric position at center to send the transmission source of detecting ripple to determinand, have reception at least one pair of sensor, and in the plane that disposes above-mentioned transmission source and each sensor, freely rotate to both forward and reverse directions from the back wave of above-mentioned determinand; Anglec of rotation detector, it detects the above-mentioned angular transducer anglec of rotation with respect to the reference position of regulation; And angle is calculated portion, the angle of coming the computing determinand by the anglec of rotation of the detected angular transducer of the above-mentioned anglec of rotation detector when it equates mutually based on the above-mentioned reflection intensity of wave that is received by above-mentioned a pair of each sensor.

But also make following structure, and possess: angular transducer, it has the sensor of reception from the back wave of transmission source of sending the detection ripple to determinand and determinand, and freely rotates around the turning cylinder parallel with the sweep of determinand; Anglec of rotation detector, it detects the anglec of rotation of above-mentioned angular transducer with respect to the reference position of regulation; The peak value test section, it detects the peak value of the above-mentioned back wave that is received by the sensor; The angle test section, the anglec of rotation of the angular transducer when its detection obtains peak value by this peak value test section; And angle calculates portion, and it calculates the angle of detected material according to the anglec of rotation that is obtained by this angle test section.

And, angular transducer is made possessing and is used for to the transmission source of determinand irradiating and detecting ripple and receives angular transducer from the sensor of the back wave of above-mentioned determinand, makes above-mentioned transmission source middle and possess the structure of a plurality of sensors on opposite each other position.

Yet, in the respective embodiments described above, although understand framework contact that makes detector body and the situation that is fixed on the angle of bend that detects workpiece on the counterdie, but also can constitute the framework contact that makes detector body and be fixed on the angle of bend that detects workpiece on the patrix.

Yet, shown in Figure 19 (figure of the case of bending of expression workpiece W), the occasion (the only occasion of shifted by delta ε) that is offset a little at the center C L9 of the center C L7 of punch die D and drift P, and in the bent angle alpha of workpiece W the big occasion of angle θ than " V " word shape groove of punch die D, owing to carry out bending machining with the state that roughly keeps above-mentioned shifted by delta ε, so, the bent angle alpha 1 of the side of the workpiece W of the centre line C L 9 of punch die D is unequal mutually with the bent angle alpha 2 of the opposite side of the workpiece W of the centre line C L 9 of punch die D, and the difference of angle [alpha] 1 and angle [alpha] 2 increases.

Therefore, if measure the correct angle of bend of workpiece W, not that a side at punch die D is provided with the bent angle alpha 1 that angle of bend checkout gear (angle of bend determinator) 102 is measured a side, and this measured value be multiply by 2, but need being set in the both sides (both sides of Y direction) of punch die D, angle of bend checkout gear 102 measures each angle [alpha] 1 of both sides, α 2 (for example measuring " δ 1 " " δ 2 " of Figure 19), and obtain each angle [alpha] 1, α's 2 and, thereby obtain the bent angle alpha of workpiece W.

On the other hand, even the occasion that is offset a little at the center C L9 of the center C L7 of punch die D and drift P, as shown in figure 20, in the bent angle alpha of workpiece W near the occasion of the angle θ of the groove of " V " word shape of punch die D (angle θ and angle [alpha] mutually about equally occasion), above-mentioned shifted by delta ε by drift P the plus-pressure during with curved workpieces W imitate punch die D to eliminate.Therefore, by only punch die D one side angle of bend checkout gear 102 is set and only detection angles α 1 and angle [alpha] 1 that this survey is detected multiply by 2, also can obtain the angle of bend of workpiece W.

Yet, utilize angle of bend checkout gear 102, owing to make framework 109 contact punch die D measure the angle of bend of workpiece W, so, as shown in figure 12, even even the axle CL13 of the relative vertical direction of central shaft CL11 of punch die D and drift P is offset small angle delta θ, also different with the bender of the workpiece of patent documentation 1 (TOHKEMY 2001-121215 communique), even only measure the angle of bend of punch die D one side, also can correctly measure the angle of bend of workpiece W.

The following describes the bending machine of workpiece.

Here, bending machine 101 to the workpiece of the angle of bend checkout gear 102 that uses workpiece describes, but, in the bending machine 101 of workpiece, not necessarily must use the device same with the angle of bend checkout gear 102 of workpiece, also can adopt the bending angle checkout gear of the workpiece of other structures, for example the angle of bend checkout gear of the workpiece shown in the patent documentation 1 (spy opens the 2001-121215 communique).

When the bending machine 101 of workpiece constitutes (with reference to Figure 22, Figure 23) as described above, can also manyly carry out so-called segmentation bending by complete the setting to mould.In addition, in the bending machine 101 of workpiece, also be provided with back gauge BG, prompting parts 206, the angle of bend checkout gear (BI) 102 of one or more workpiece, floor push 208.

Back gauge BG be when workpiece W is implemented bending machining for workpiece W being carried out the location of Y direction, the operator is decided to be the parts of usefulness to workpiece W.Prompting parts 206 be when workpiece W is implemented bending machining for workpiece W being carried out the location of X-direction, the operator is decided to be the parts of usefulness to workpiece W.Floor push 208 is the switches of pressure head that are used to start the bending machine 101 of workpiece.

Here, in order to should be readily appreciated that, " clamping point ", " DV value ", " estimating the DV value of finally approaching (final DV value) of springback capacity ", " the DV value of virtual bending " are described.

" clamping point " is meant the state when workpiece W begins to be clamped by punch die D and drift P.Workpiece W is out of shape hardly under this state, still, because by being clamped by drift P and punch die D and workpiece W being applied small power, so workpiece W is fixed by punch die D and drift P substantially.

" DV value " is meant from the deep of the groove of " V " word shape of punch die D to the distance of the leading section of drift P.But, drift P and the variation of the distance of punch die D and change of DV value during along with bending workpieces W.

" estimate the DV value of finally approaching (final DV value) of springback capacity " and be meant that when for example the springback capacity of workpiece W of occasion of making the product of 90 ° of bending angles when making and settlement was 1 °, finally the DV value then was with 89 ° of needed DV values of workpiece W bending.

" the DV value of virtual bending " is meant, DV value when the angle of bend of workpiece W is bigger slightly than the angle of bend of final DV value, the final DV value of occasion of for example making the product of 90 ° of bending angles is the occasion with the crooked 89 ° of needed DV values of workpiece W, and the DV value of virtual bending then is meant 91 ° of needed DV values of workpiece W bending.

In addition, in the bending machine 101 of workpiece, be provided with control device shown in Figure 26 201.The formation of this control device 201 for example possesses: CPU203, stocking mechanism (storage portion) 205, input mechanism (input part) 207, output mechanism (efferent) 209, bending sequence determination means (bending sequence determination section) 211, mould determination means (mould determination section) 213, mold layout determination means (mold layout determination section) 215, the location of workpiece is calculated mechanism's (location of workpiece is calculated portion) 217, angle detection position determination means (BI determining positions portion) 219, prompting parts determining positions mechanism (prompting parts determining positions portion) 221, mechanism's (portion is calculated in the back gauge position) 223 is calculated in the back gauge position, floor push determining positions mechanism (floor push determining positions portion) 225, pressure head drives controlling organization (pressure head drive control part) 227 and protruding controlling organization (protruding control part) 229.

And, be provided with final DV in the control device 201 and put and calculate that mechanism, back gauge drive detent mechanism, angle detection device drives (all not shown) such as detent mechanisms.

Input part 207 for example, by network or use storage medium input such as CD and the relevant information (product information) of form from the product of workpiece W manufacturing.The formation of efferent 209 for example possesses, indication mechanism that is made of LCD etc.Required information etc. when storage portion 205 is used to store the working procedure of CPU203 or control device 201 actions.

Bending sequence determination section 211, based on the bending sequence of the product information decision workpiece W that is imported by input part 207, mould determination section 213 is based on the crooked employed mould (single or multiple moulds, normally a plurality of moulds) of the said goods information decision workpiece W.

Mold layout determination section 215, based on the crooked employed mold layout of product information decision workpiece W, the location of workpiece is calculated portion 217 and is calculated with respect to by the mould of mold layout determination section 251 decisions the position of position by the workpiece W of each bending sequence of the workpiece W of bending sequence determination section 211 decisions being set as Work position information.

Above-mentioned final DV value is calculated mechanism, calculates the final DV value of each bending sequence of the workpiece W that is determined by bending sequence determination section 211 based on the said goods information; Portion 223 is calculated based on the said goods information in the back gauge position, calculates position by the back gauge BG of each bending sequence of the workpiece W of bending sequence determination section 211 decision as the back gauge positional information.

Above-mentioned back gauge drives detent mechanism, based on calculated the back gauge positional information that portion 223 calculates by the back gauge position, with drivers such as servo motors back gauge is driven and be positioned assigned position.BI determining positions portion 219 detects the position (detection position of the angle of bend of the workpiece W of the sweep bearing of trend of workpiece W) of angle of bend checkout gear (BI:Bending Indicator) 102 of the angle of bend of workpiece W to by each bending sequence decision bending machining workpiece W of the workpiece W of bending sequence determination section 211 decision the time.

Above-mentioned angle detection device drives detent mechanism, based on the detection position information by 219 decisions of BI determining positions portion, is used for drivers such as servo motors the angle of bend checkout gear 102 of workpiece being driven and be positioned assigned position.

In addition, be provided with a plurality of workpiece angle of bend checkout gears 102 on the bending machine 101 of workpiece, these each drivers such as servo motor that are provided with respectively of angle of bend checkout gear 102 usefulness of each workpiece can be used for respectively moving and locating in X-direction independently.

And BI determining positions portion 219 constitutes, and based on the said goods information, each bending sequence by the workpiece W of bending sequence determination section 211 decision is determined the quantity and the position of employed workpiece angle of bend checkout gear 102.

For example, the angle of bend checkout gear 102 of workpiece can followingly dispose, that is, in the length of the X-direction of workpiece W than setting A _XUnder the long situation, at the both ends of the X-direction of workpiece W and the angle of bend that workpiece W is measured in these three places of central portion (the angle of bend checkout gears 102 of three workpiece); In the length of the X-direction of workpiece W at setting A _XBelow and than setting B _X(than above-mentioned value A _XShort value) under the long situation, measures the angle of bend of workpiece W in these two places, both ends (two workpiece angle of bend checkout gears 102) of the X-direction of workpiece W; In the length of the X-direction of workpiece W at setting B _XUnder the following situation, at a local angle of bend of measuring workpiece W.Have again, on the angle of bend of workpiece W locates, have the article shaped in hole etc., can not be under the situation of this position finding angle of bend, the correction that BI determining positions portion 219 will locate.

The pressure head drive control part 227 of control device 201, based on CPU203 control down calculate the final DV value that mechanism calculates by above-mentioned final DV value, each bending sequence of the workpiece W that determined by bending sequence determination section 211 is controlled the driver 202 of drive ram.

Omit its detailed description though constitute the prompting parts 206 of prompting mechanism, still, for example the prompting mechanism of the bending machine of putting down in writing with the 4th embodiment of TOHKEMY 2004-160547 communique is employed has a same structure.And, when carrying out the bending machining of workpiece W, in each bending sequence, to the position of the workpiece W of the bearing of trend of the sweep of operator prompting's workpiece W by the workpiece W of bending sequence determination section 211 decision.

By constituting in this wise, the operator can understand then easily can carry out bending machining to workpiece W at which Working position (mould).

In addition, prompting parts 206 for example cooperate with the guide rail 133 of above-mentioned second travel mechanism 113, with drivers such as servo motors, move freely the location dividually with the angle of bend checkout gear 102 of workpiece under control device 201 is controlled.

In addition, also can adopt parts that first embodiment to the, three embodiments of TOHKEMY 2004-160547 communique put down in writing as prompting mechanism to replace the prompting parts.

In addition, on the bending machine 101 of workpiece W, be provided with the same floor push of being put down in writing with TOHKEMY 2005-319515 communique 208 of floor push.This floor push 208 is by guiding such as linear bearing and with driver drives such as servo motors, moves freely the location at the bearing of trend (X-direction) of the sweep of workpiece W.This floor push 208 constitutes, based on the position of being calculated the workpiece W that portion 217 calculates by the location of workpiece, to each the bending sequence running fix by the workpiece W of bending sequence determination section 211 decisions.

Have again, on the bending machine 101 of workpiece, along the sweep bearing of trend of workpiece W with narrow spacing (for example, at least two spacings that raised member 231 works on each of the mould that is configured; The spacing that in each the size of length direction of the mould that is configured, has two raised member 231 at least) for example is provided with same a plurality of raised member 231 (with reference to Figure 31 A, Figure 31 B) of male means with the record of TOHKEMY 2005-230882 communique side by side.In the bending machine 101 of workpiece, though between lower table 105 and punch die frame 107, be provided with each raised member 231, but also can between upper table 110 and punch carrier 106, be provided with each raised member 231, also can each raised member 231 be set at lower table 105 and upper table 110 both sides.

With reference to Figure 31 (A) above-mentioned raised member 231 is illustrated simply, constituting of raised member 231, possess first parts 233 that are wholely set on punch die frame 107, and cooperate with this first parts 233 and by relative above-mentioned first parts 233 of drivers such as servo motor and lower table 105 rotations second parts 235 freely.

Above-mentioned each parts 233,235 for example are made of the rotation wedge mechanism shown in Figure 3 of TOHKEMY 2005-230882 communique.This rotation wedge mechanism constitutes, and first parts 233 on the composition surface that possesses corresponding (the face contact) inclination are set on second parts 235 on the composition surface that possesses inclination.

In addition, shown in Figure 31 (A), between each raised member 231 of X-direction, be provided with fluid pressure cylinder 237.And, by drive fluid pressure cylinder 237, punch die frame 107 can relative to lower table 105 near or away from direction move.

And, under the control of the protruding control part 229 of control device 201, when punch die frame 107 being moved upward with fluid pressure cylinder 237, make first parts, 233 rotational positioning and make each raised member 231 be in suitable height, then, if punch die frame 107 is moved downwards, then such shown in dotted line among Figure 31 (A) or double dot dash line with fluid pressure cylinder 237, punch die frame 107 (punch die D) is out of shape a little, can carry out suitable projection.At this moment, hope can be controlled the size of power of each fluid pressure cylinder 237 of mobile punch die frame 107 respectively downwards.

Also have, shown in Figure 31 (B), fluid pressure cylinder 237 can be set, can also between each raised member 231, elongate at interval (rejecting at interval) fluid pressure cylinder 237 suitably is set at the both ends of each raised member 231.

Secondly, the action to the bending machine 101 of workpiece describes.

In the bending machine 101 of workpiece.As mentioned above or as shown in figure 22, a plurality of mould P, D are set, make the so-called segmentation bending (for example, carrying out the bending machining from left to right of Figure 22 successively) of carrying out workpiece W is carried out successively bending machining in X-direction.

At first, illustrate that with reference to Figure 29 the bigger workpiece W of the size to X-direction shown in Figure 24 carries out the situation of bending machining.

In step S201, receive product information by input part 207 from CAD etc., in step S203, by the layout of bending sequence determination section 211, mould determination section 213, the bending sequence of mold layout determination section 215 decision workpiece, crooked employed each mould, these each moulds.According to this layout, the operator is with each mould P, D such as Figure 22 or be arranged on as shown in Figure 28 on the bending machine 101.

Then, in step S205, use CPU203 etc. obtains the DV value to each bending operation (each bending sequence of workpiece W) of workpiece W, the L value, in step S207, each bending operation to workpiece W, calculate portion 217 by the location of workpiece, prompting parts determining positions portion 221, BI determining positions portion 219, portion 223 is calculated in the back gauge position, the position of pointing out parts 206 is calculated by floor push determining positions portion 225, the usage quantity and the position of the angle of bend checkout gear 102 of workpiece, the position of reverse stroke extreme position device BG, the position of floor push 208.

And, with these data of calculating as shown in figure 27, be presented on the indication mechanism of efferent 109.Form shown in Figure 27 has been represented bending sequence " 1,2,3... ", employed mould in each bending sequence " a, b, c, d... ", the position of each mould as shown in figure 28 " L0 ", the position of the angle of bend checkout gear 102 of each workpiece W " L1, L2, L3... ", the position " LN " of final DV value, L value, prompting parts 206.Also have, except above-mentioned each demonstration, can also show the position of reverse stroke extreme position device BG and the position of floor push 208 etc.For example, in the occasion of using two reverse stroke extreme position device BG, floor push 208 is positioned two central authorities between the reverse stroke extreme position device BG in X-direction usually.

Also have, the operator selects each value shown in Figure 27 with the touch panel that is arranged on the above-mentioned indication mechanism, and can use " numerical key " etc. to revise.Have, each value shown in Figure 27 also can be obtained without control device 201 calculating but just be imported from initial by the operator again.

Secondly, in step S209,, prompting parts 206, each angle of bend checkout gear 102, floor push 208, reverse stroke extreme position device BG are carried out running fix in order to carry out first bending operation.Also have, under this state, the angle of bend checkout gear that the detector body 103 of each angle of bend checkout gear 102 is positioned at than workpiece W more leans on the below.Then, in step S211, the operator is with workpiece W location and be arranged at reverse stroke extreme position device BG, prompting parts 206.Under this is provided with state, when the operator operates floor push 208, then pressure head decline (S213).

If pressure head descends and reaches clamping point (S215), then pressure head temporarily stops, prompting parts 206, reverse stroke extreme position device are kept out of the way (S217), the bending (S219) to workpiece W is carried out in the further decline of pressure head, drift reaches virtual bending position (the DV value of virtual bending) back (S221), pressure head stops, and detector body 103 is moved to top as the angle detection position of workpiece W, detects the angle of bend (S223) of workpiece with the angle of bend checkout gear 102 of workpiece.

Then, in step S225, pressure head is risen a little remove the load (unloading) that workpiece W is applied, the angle of bend with the workpiece W after the angle of bend checkout gear 102 mensuration unloadings of workpiece in step S229, detects resilience (SB) amount of workpiece W.

Secondly, based on above-mentioned detected SB amount, calculate fresh target angle (the new final DV value of workpiece W; Revised final DV value) (S231), pressure head further descends, and reaches the occasion (S235) of revised final DV value at pressure head (drift P), finishes first bending machining.Then, return step S209, carry out second later bending operation by same order and finish up to all bending machining.

Secondly, illustrate that with reference to Figure 30 the smaller workpiece W of the size to X-direction shown in Figure 25 carries out the situation of bending machining.

Action shown in Figure 30, in the action of the steps performed S309 action with step of replacing S209, the action of steps performed S332 is different with action shown in Figure 29 with the action this respect that replaces S232.

In step S309, though carried out pointing out the running fix of parts 206, back gauge BG, floor push 208, but, each angle of bend checkout gear 102 is for fear of interfering with prompting parts 206, and each angle of bend checkout gear 102 is not running fix but keeps out of the way in X-direction.

And, in step S323, each angle of bend checkout gear 102 is carried out running fix in X-direction, measure the angle of bend of workpiece W.

Yet, in the bending machine of existing workpiece W, workpiece is implemented the bending machining of regulation and obtained the occasion of product, though each action of bending machine (for example, detect the action of the angle of bend of (measurement) workpiece W) by automation, but because whole not automation of action, efficient obtains product well so be difficult to the bending machining workpiece sometimes.

But, if adopt the bending machine 101 of workpiece, owing to constitute as described above, so, the bending machining workpiece also obtains all automations of action (the calculating or the action of the mensuration of angle of bend etc. of position that comprises mould and workpiece) of product, in whole actions of the workpiece bending machine in the making of product, need the degree of operator intervention to reduce than prior art.Therefore, can more effectively obtain product than the bending machine of existing workpiece.

In addition, if adopt the bending machine 101 of workpiece, owing to possess the prompting parts,, can more effectively obtain product so carry out the location of the workpiece W on horizontal (bearing of trend of the sweep of workpiece, the X-direction) of the workpiece bending machine 101 when curved workpieces W easily.

In addition, if adopt the bending machine 101 of workpiece, because it constitutes, quantity and position based on product information decision workpiece angle of bend checkout gear 102, so, the angle of bend of workpiece W in the time of can correctly measuring the bending machining of workpiece W according to form of workpiece W etc., thus can carry out more accurate bending machining.

Have again,,,, thereby can carry out the bending machining of workpiece W more efficiently so in the bending machining of workpiece W, the operator operates floor push 208 easily because the floor push 208 that moves freely the location is set if adopt the bending machine 101 of workpiece.

Also have,, also can constitute above-mentioned prompting mechanism with this floor push 208 according to the bend mode of workpiece W.That is, also can make the operator is target with the position of the floor push 208 that is positioned, the employed mould of bending of identification workpiece W, and the workpiece W that finds simultaneously in X-direction is to the position that is provided with of the bending machine 101 of workpiece.

In addition, if adopt the bending machine 101 of workpiece, owing to possess a plurality of raised member 231, so can carry out the bending machining of the more correct workpiece W of shape.Also have, raised member 231 is owing to the orientation (bearing of trend of the sweep of workpiece W at each mould; The bending machine 101 of workpiece W laterally) on be provided with side by side a plurality of, so can realize the projection of variety of way.For example, not only central portion becomes the projection of convex, and can realize repeating the projection of concavo-convex and so on mode in X-direction, thereby can realize the suitable projection corresponding with each mould of layout.

Except that above-mentioned and, the present invention is not limited to the explanation of the embodiment of foregoing invention, by carrying out suitable change, can other variety of ways implement.

In addition, the full content of Japan's patent application 2004-377571 communique (application on December 27th, 2004) and Japan's patent application 2005-356558 number (application on December 9th, 2005) is included in the present specification by reference.

Claims (7)

1. the angle of bend checkout gear of a workpiece is used for being undertaken by the co-operating of upper die and lower die the bending machine of the bending machining of workpiece, it is characterized in that,

Comprise with the lower part:

Framework; And

Detector body, it is in the contact of above-mentioned framework and be fixed under the state in the portion of being touched of above-mentioned patrix or above-mentioned counterdie, can detect the angle of bend of above-mentioned workpiece, and this portion of being touched is formed at the side of above-mentioned counterdie;

First travel mechanism, it can and be fixed on the position of above-mentioned above-mentioned detector body when being touched in the portion and above-mentioned detector body moves above-mentioned detector body between the position of the above-mentioned detector body of above-mentioned mould farthest the time in the contact of the framework of above-mentioned detector body; Above-mentioned first travel mechanism is from the deviation location of above-mentioned detector body from above-mentioned counterdie below farthest, framework to above-mentioned detector body contacts and is fixed on the mechanism that the above-mentioned contact position that is touched the top in the portion tilts to move above-mentioned detector body, and, deviation location one side below above-mentioned, move above-mentioned detector body point-blank, contact position one side above above-mentioned moves above-mentioned detector body near the bigger mode of ratio that the above-mentioned above-mentioned detector body of ratio that is touched portion rises in the horizontal direction with above-mentioned detector body.

2. the angle of bend checkout gear of workpiece according to claim 1 is characterized in that,

Also have second travel mechanism, its above-mentioned detector body by above-mentioned first travel mechanism when above-mentioned mould leaves, can move above-mentioned detector body to the sweep direction of above-mentioned workpiece.

3. the bending machine of a workpiece is characterized in that,

Comprise with the lower part:

Determine the bending sequence determination means of the bending sequence of workpiece based on product information;

Determine the mould determination means of the crooked employed mould of above-mentioned workpiece based on the said goods information;

Determine the mold layout determination means of the crooked employed mold layout of above-mentioned workpiece based on the said goods information;

Calculate the position of above-mentioned workpiece of each bending sequence of the above-mentioned workpiece that is determined by above-mentioned bending sequence determination means as Work position information and calculate mechanism with respect to the location of workpiece that the position is set of the mould that is determined by above-mentioned mold layout determination means;

Each bending sequence of the above-mentioned workpiece that determined by above-mentioned bending sequence determination means is determined the angle detection position determination means that locates of the angle of bend of above-mentioned workpiece; And,

The angle of bend checkout gear of the described workpiece of claim 1.

4. the bending machine of workpiece according to claim 3 is characterized in that,

Has when carrying out the bending machining of above-mentioned workpiece the prompting mechanism that the position of the above-mentioned workpiece of the sweep bearing of trend of above-mentioned workpiece is pointed out.

5. according to the bending machine of claim 3 or 4 described workpiece, it is characterized in that,

Be provided with the angle of bend checkout gear of the workpiece that a plurality of angle of bend that carry out above-mentioned workpiece detect, above-mentioned each workpiece angle of bend checkout gear constitutes can distinguish running fix independently; And

Above-mentioned angle detection position determination means determines the quantity and the position of employed above-mentioned workpiece angle of bend checkout gear based on the said goods information.

6. according to the bending machine of claim 3 or 4 described workpiece, it is characterized in that,

The floor push that possesses the pressure head of the bending machine that is used to start above-mentioned workpiece, this floor push constitute based on the position of being calculated the workpiece that mechanism calculates by the above-mentioned location of workpiece and move it the location.

7. according to the bending machine of claim 3 or 4 described workpiece, it is characterized in that,

At the upper table that is used to be provided with patrix, be used to be provided with any workbench at least of the lower table of counterdie, be provided with a plurality of raised member.

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